Removed installation step and fixed numbering
Removed installation step and fixed numbering

Removed the installation step for configuring DoSPDX, since that is now handled by our config.txt

MINOR: The installation numbers went 1, 4, 5, but the page automatically corrected the numbering. Fixed the source anyway.
kernhe/SPDX-Git-Scanner,SPDX-Git/SPDX-Git-Scanner,SPDX-Git/SPDX-Git-Scanner,kernhe/SPDX-Git-Scanner